Shell, assembly structure of shell and PCB (printed circuit board) and sound production device for steering

Abstract

The utility model discloses a shell, an assembly structure of the shell and a PCB and a sound production device for steering, which are applied to the sound production device for steering, and comprise a shell, an installation cavity is formed in the shell, a step embedding hole for installing the PCB is formed at the opening end of the installation cavity, and the step embedding hole is formed in the opening end of the installation cavity. And the inner wall of the step embedding hole is provided with a rotary clamping groove which is used for rotating, clamping and fixing with a clamping convex part on the PCB. According to the utility model, the clamping convex part is directly arranged on the PCB, and the rotary clamping groove is arranged on the inner wall of the step embedding hole, so that the PCB can be directly rotated and locked in the step embedding hole of the shell, and a bottom cover does not need to be used for pressing and fixing.

Description

Technical Field

[0001] The utility model relates to the technical field of sound - emitting devices for steering, and particularly relates to a housing, an assembly structure of the housing and a PCB board, and a sound - emitting device for steering. Background Art

[0002] In the existing sound - emitting device for steering, the PCB board and the housing are generally assembled by pressing the PCB board tightly in the housing with a bottom cover. The bottom cover and the housing are generally assembled and fixed by an interference fit structure or a bayonet structure. In this way, in the process of pressing and fixing the PCB board with the bottom cover, there is a certain risk that the PCB board or the components on it may be damaged by the bottom cover, thus affecting the product quality. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a housing, which mainly solves the technical problem that there may be a risk of damage to the PCB board or the components on it when using a bottom cover to fix the PCB board in the housing in the prior art.

[0004] To achieve the above object, the utility model is realized by the following technical solutions:

[0005] A housing is applied to a sound - emitting device for steering, and includes a housing body. An installation cavity is formed inside the housing body. A stepped embedding hole for installing a PCB board is formed at the open end of the installation cavity. A rotary clamping groove for rotatably clamping and fixing with a clamping protrusion on the PCB board is formed on the inner wall of the stepped embedding hole.

[0006] Further, the rotary clamping groove includes a vertical guiding groove vertically formed on the inner wall of the stepped embedding hole and a horizontal locking groove horizontally formed on the inner wall of the stepped embedding hole. The vertical guiding groove and the horizontal locking groove communicate with each other, and the upper end of the vertical guiding groove extends to the end face of the stepped embedding hole.

[0007] Further, the vertical guiding groove and the horizontal locking groove communicate with each other to form an L - shaped clamping groove structure, and the bottom surface of the horizontal locking groove is flush with the stepped bottom surface of the stepped embedding hole.

[0008] Further, the groove height of the horizontal locking groove is configured to be tapered from the starting end connected to the vertical guiding groove to the end - tail end direction, so that the horizontal locking groove can form an interference fit with the clamping protrusion on the PCB board to be assembled.

[0009] Further, a plurality of rotary clamping grooves are formed on the inner wall of the stepped embedding hole.

[0010] Further, two rotary clamping grooves are formed on the inner wall of the stepped embedding hole, and the two rotary clamping grooves are symmetrically formed on the inner wall of the stepped embedding hole.

[0011] Furthermore, the housing is cylindrical, and the stepped embedding hole is a circular hole structure.

[0012] Based on the same inventive concept, the present utility model also provides an assembly structure of a housing and a PCB board, including a PCB board and any one of the above-mentioned housings. Among them, the PCB board has a circular structure adapted to the stepped embedding hole, and a clamping convex portion for rotatably clamping and fixing with the rotary clamping groove on the inner wall of the stepped embedding hole is provided at the circumferential position of the PCB board. The clamping convex portion and the vertical guiding groove cooperate with each other to guide the embedding process of the PCB board in the stepped embedding hole. And when the PCB board is embedded in the stepped embedding hole in place, by rotating the PCB board to drive the clamping convex portion to rotate and snap into the transverse locking groove, the PCB board and the housing are locked together.

[0013] Furthermore, the depth of the stepped embedding hole is greater than the thickness of the PCB board, and when the PCB board is installed in the stepped embedding hole in place, sealant is filled in the remaining part of the stepped embedding hole.

[0014] Based on the same inventive concept, the present utility model also provides a sound generating device for steering, including the above-mentioned housing and / or the above-mentioned assembly structure of the housing and the PCB board.

[0015] The above technical solution has the following advantages or beneficial effects:

[0016] In the housing, the assembly structure of the housing and the PCB board, and the sound generating device for steering of the present utility model, a clamping convex portion is directly provided on the PCB board, and a rotary clamping groove for rotatably clamping and fixing with the clamping convex portion on the PCB board is provided on the inner wall of the stepped embedding hole. During assembly, the clamping convex portion on the PCB board is first aligned with the rotary clamping groove on the inner wall of the stepped embedding hole and snapped in, and then by rotating the PCB board, the PCB board is clamped in the stepped embedding hole of the housing, thereby completing the rotary clamping operation of the housing and the PCB board and locking the two together. There is no need to use a bottom cover to press and fix the PCB board. Thus, compared with the existing method of using a bottom cover to press and fix the PCB board in the housing, the use of the bottom cover is omitted, the production cost of the product is saved, and the assembly process of the PCB board and the housing is also simplified, which is beneficial to improving the product assembly efficiency. Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of the housing according to an embodiment of the present utility model.

[0018] Figure 2 is a structural schematic diagram of the PCB board according to an embodiment of the present utility model.

[0019] Figure 3 is a schematic diagram of the assembly structure of the housing and the PCB board according to an embodiment of the present utility model.

[0020] Figure 4 It is a schematic diagram of the assembly structure of the outer shell and the PCB board from another angle in the embodiment of the present utility model.

[0021] Label description:

[0022] 1. Housing, 2. PCB board, 11. Installation cavity, 12. Step embedding hole, 13. Rotating clamping groove, 21. Clamping protrusion, 131. Vertical guiding groove, 132. Horizontal locking groove. Specific implementation mode

[0023] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0025] Please refer to the attached Figure 1 to the attached Figure 4 , an embodiment of the present utility model provides an outer shell, which is applied to a steering sound generating device, including a housing 1. An installation cavity 11 is formed inside the housing 1. A step embedding hole 12 for installing the PCB board 2 is formed at the open end of the installation cavity 11. A rotating clamping groove 13 for rotating and clamping and fixing with the clamping protrusion 21 on the PCB board 2 is formed on the inner wall of the step embedding hole 12. It can be understood that in this embodiment, the clamping protrusion 21 is directly provided on the PCB board 2, and a rotating clamping groove 13 for rotating and clamping and fixing with the clamping protrusion 21 on the PCB board 2 is formed on the inner wall of the step embedding hole 12. During assembly, the clamping protrusion 21 on the PCB board 2 is first aligned with the rotating clamping groove 13 on the inner wall of the step embedding hole 12 and inserted. Then, by rotating the PCB board 2, the PCB board 2 is clamped in the step embedding hole 12 of the outer shell, and thus the rotating clamping operation of the outer shell and the PCB board 2 is completed, locking the two together. There is no need to use a bottom cover to press and fix the PCB board 2. In this way, compared with the prior art method of using a bottom cover to press and fix the PCB board 2 in the housing, the use of the bottom cover is omitted, saving the production cost of the product, and also simplifying the assembly process of the PCB board 2 and the housing 1, which is beneficial to improving the product assembly efficiency.

[0026] Please refer to the attached Figure 1 , attached Figure 2, in a preferred embodiment, the rotary clamping groove 13 includes a vertical guiding groove 131 vertically formed on the inner wall of the stepped embedding hole 12 and a horizontal locking groove 132 horizontally formed on the inner wall of the stepped embedding hole 12. The vertical guiding groove 131 communicates with the horizontal locking groove 132, and the upper end of the vertical guiding groove 131 extends to the end face of the stepped embedding hole 12. The vertical guiding groove 131 and the horizontal locking groove 132 communicate with each other to form an L-shaped clamping groove structure, and the bottom surface of the horizontal locking groove 132 is flush with the stepped bottom surface of the stepped embedding hole 12. In this embodiment, during assembly, the clamping protrusion 21 on the PCB board 2 first snaps into the corresponding vertical guiding groove 131, and then the PCB board 2 is pressed down so that the PCB board 2 sinks into the stepped embedding hole 12 of the housing 1 until the PCB board 2 abuts against the stepped bottom surface of the stepped embedding hole 12. Then, the PCB board 2 is rotated by a certain angle in a predetermined direction until the clamping protrusion 21 on the PCB board 2 rotates to abut against the end position of the extension of the horizontal locking groove 132. In this way, the PCB board 2 can be stably locked with the housing 1, and the installation depth and installation azimuth angle of the PCB board 2 on the housing 1 are fixed, which greatly ensures the consistency of the assembly parameters of the PCB board 2 and the housing 1 and is conducive to improving the product quality stability.

[0027] Please refer to the attached Figure 1 , attached Figure 2 , in a preferred embodiment, the groove height of the horizontal locking groove 132 is configured to be tapered from the starting end connected to the vertical guiding groove 131 towards the end, so that the horizontal locking groove 132 can form an interference fit with the clamping protrusion 21 on the PCB board 2 to be assembled. In this way, it is beneficial to improve the assembly stability of the PCB board 2 and the housing 1.

[0028] Please refer to the attached Figure 1 , attached Figure 2 , in a preferred embodiment, a plurality of rotary clamping grooves 13 are formed on the inner wall of the stepped embedding hole 12. Two rotary clamping grooves 13 are formed on the inner wall of the stepped embedding hole 12, and the two rotary clamping grooves 13 are symmetrically formed on the inner wall of the stepped embedding hole 12. However, those skilled in the art should understand that in other embodiments, other numbers of rotary clamping grooves 13 can also be formed on the inner wall of the stepped embedding hole 12, and a plurality of clamping protrusions 21 corresponding to the respective rotary clamping grooves 13 are provided on the PCB board 2, which is not limited to the specific implementation disclosed in this embodiment.

[0029] Please refer to the attached Figure 1 , attached Figure 2 , in a preferred embodiment, the housing 1 is cylindrical, and the stepped embedding hole 12 is a circular hole structure.

[0030] Please refer to the attached Figure 1 to attached Figure 4, an embodiment of the present utility model further provides an assembly structure of a housing and a PCB board, including the PCB board 2 and the housing of any one of the above embodiments. Among them, the PCB board 2 has a circular structure adapted to the stepped embedding hole 12, and a clamping convex portion 21 for rotatably clamping and fixing with the rotary clamping groove 13 on the inner wall of the stepped embedding hole 12 is provided at the peripheral side position of the PCB board 2. The clamping convex portion 21 and the vertical guiding groove 131 cooperate with each other to guide the embedding process of the PCB board 2 in the stepped embedding hole 12. And when the PCB board 2 is embedded in place in the stepped embedding hole 12, the PCB board 2 is rotated to drive the clamping convex portion 21 to rotate and snap into the horizontal locking groove 132, thereby locking the PCB board 2 and the housing 1 together.

[0031] Please refer to the attached Figure 1 to the attached Figure 4 , in one preferred embodiment, the depth of the stepped embedding hole 12 is greater than the thickness of the PCB board 2. And when the PCB board 2 is installed in place in the stepped embedding hole 12, sealant is filled in the remaining part of the stepped embedding hole 12. By providing the stepped embedding hole 12, on the one hand, the assembly gap between the PCB board 2 and the inner wall of the housing 1 can be sealed to improve the product tightness. On the other hand, the sealant can also further improve the assembly firmness of the PCB board 2 and the housing 1.

[0032] An embodiment of the present utility model further provides a sound generating device for steering, including the housing of any one of the above embodiments and / or the assembly structure of the housing and the PCB board.

[0033] As described above, the embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model. Therefore, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

Claims

1. A housing, which is applied to a sound - making device for steering, includes a housing body (1). An installation cavity (11) is formed inside the housing body (1). A stepped embedding hole (12) for installing a PCB board (2) is formed at the open end of the installation cavity (11). It is characterized in that: A rotation latching groove (13) for rotatably latching and fixing with a latching protrusion (21) on a PCB board (2) is formed in the inner wall of the stepped embedding hole (12).

2. The housing according to claim 1, wherein: The rotation latching groove (13) includes a vertical guiding groove (131) vertically formed in the inner wall of the stepped embedding hole (12) and a horizontal locking groove (132) horizontally formed in the inner wall of the stepped embedding hole (12). The vertical guiding groove (131) communicates with the horizontal locking groove (132), and the upper end of the vertical guiding groove (131) extends to the end face of the stepped embedding hole (12).

3. The housing according to claim 2, characterized in that: The vertical guiding groove (131) and the horizontal locking groove (132) communicate with each other to form an L-shaped latching groove structure, and the bottom surface of the horizontal locking groove (132) is flush with the stepped bottom surface of the stepped embedding hole (12).

4. The housing according to claim 3, characterized in that: The groove height of the horizontal locking groove (132) is configured to be tapered from the starting end connected to the vertical guiding groove (131) towards the ending end, so that the horizontal locking groove (132) can form an interference fit with the latching protrusion (21) on the PCB board (2) to be assembled.

5. The housing according to any one of claims 1 to 4, characterized in that: A plurality of rotation latching grooves (13) are formed in the inner wall of the stepped embedding hole (12).

6. The housing according to claim 5, characterized in that: Two rotation latching grooves (13) are formed in the inner wall of the stepped embedding hole (12), and the two rotation latching grooves (13) are symmetrically formed in the inner wall of the stepped embedding hole (12).

7. The housing according to claim 6, characterized in that: The housing (1) is in a cylindrical shape, and the stepped embedding hole (12) is in a circular hole structure.

8. An assembly structure of a housing and a PCB board, characterized in that: It includes a PCB board (2) and the housing according to any one of claims 2 to 7. Wherein, the PCB board (2) is in a circular structure adapted to the stepped embedding hole (12), and a latching protrusion (21) for rotatably latching and fixing with the rotation latching groove (13) on the inner wall of the stepped embedding hole (12) is provided at the circumferential position of the PCB board (2). The latching protrusion (21) and the vertical guiding groove (131) cooperate with each other to guide the embedding process of the PCB board (2) in the stepped embedding hole (12). And when the PCB board (2) is embedded in the stepped embedding hole (12) in place, the PCB board (2) is rotated to drive the latching protrusion (21) to rotate and latch into the horizontal locking groove (132), thereby locking the PCB board (2) and the housing (1) together.

9. The assembly structure of the housing and the PCB board according to claim 8, characterized in that: The depth of the stepped embedding hole (12) is greater than the thickness of the PCB board (2). And when the PCB board (2) is installed in the stepped embedding hole (12) in place, sealant is filled in the remaining part of the stepped embedding hole (12).

10. A sound - emitting device for steering, characterized in that: It includes the housing according to any one of claims 1 to 7 and / or the assembly structure of the housing and the PCB board according to claim 8 or 9.

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